I’m not able to understand if you can have multiple different input in sheets with different shape on OpenNest… Or maybe I’m the problem… and I’m not able to configure it out correctly.
I have some “strange” output, In this case it test 3 different solutions?
Someone played with this situation?
Thanks in advance!
Hello
most of the time documentation can help !
You have a datatree of sheets not a list ! Indeed it is 3 lists of one element.
Absolutly the documentation can help!.. maybe I didn’t explain correctly.
My idea is, with these info:
SheetA = dimensions A1 * A2
SheetB = dimensions B1 * B2
SheetC = dimensions C1 * C2
I would like to find the minimum combinations of N1/N2/N3 for have the less total area that contains GEO (pieces):
area(sheetA )* N1 + area(sheetB)*N2 + area(SheetC)*N3 = combination with less value
I would like to understand if OpenNest work with this or not. I’m sorry if this information is write somewhere, but I’m not able to find where.
Thanks in advance for your help.
sorry but I don’t understand your problem.
I understand you have 3 sheets so to take that into account you need to flatten the list of sheets
You were doing that,
You need to do that
OpenNest will begin by the first list.
So if you want to test all combination of sheet just make all combinations in a Datatree.
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Thanks a lot for your explanation… opens a deeper understand of opennest.
I will try to study permutation porposed…
The general problem is this:
- I have a stock of sheetmetal in my store. I have different dimensions of sheets with different quantity ( 10 sheets modelA , 5 sheets modelB etc etc)
- I have a lot of pieces to cut… but, If I use for example 10 sheets of one dimension is more inefficent of use 5 sheets of one smaller dimensions plus 3 pieces of another dimension etc etc
How many sheets for each mesaure I have to use?
A reduce question could be:
How many sheets (N1+N2+N3+…) generate a lower total area of material ?
(with this question Is not necessary know how many sheets I have in my store for each dimension)
For one input sheet, Is the answer that give OpenNest, OpenNest replicate sheets how many he needs for finish objects.
I would like to undertand if there is a way to investigate in this direction.
Sorry for my questions, also my knoledge of english is not so perfect for transmit the exact question.
Thanks again for precious help.
I understand more what you need, OpenNest is a good tool but what you ask seems to be more the job of dedicated tool (not free). It could be done, but time of calculation depends on your inputs, precision asked …
@Petras1 what do you think of this ?
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True it is a linear process, fill one sheet, then goes to the next one and so on.
The question is relation to an additional optimization when sheets and also randomly selected for nesting. This cannot be done. It is more custom tailored tools or commercial 
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Thanks for reply @Petras1 !.. my tests was right… ok.
In our company we use an internal nesting sw attached with ERP for manage the sheets on store…
My idea was create a grasshopper definition with a nesting algorithm inside for commercial use ( write a quote/offer).
Thanks again for help.